American Airlines and Hawaiian have round-trip flights from Los Angeles (LAX) to Maui-Kahului (OGG) for $198, NONSTOP. Flights August to December. No Friday departures. Extended weekends available. Origin/Destination reversible.
Carry-on bag is allowed for free. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.
United also has fares available, but they charge for bags, so it’s more expensive.